It’s hard to doubt that legendarily entitled Millennial social-justice warriors will finally go too far, and not even The Onion will be able to sufficiently parody their aggressive fragility. In a campus culture saturated with controversy over trigger warnings and so-called micro-aggressions, my favorite story comes from Brown University.

Even some of Brown’s coddling administrators had to shake their heads at the student response to a debate between leftist feminist Jessica Valenti and libertarian Wendy McElroy. A campus debate is usually a tame-enough event, but this debate would deal with the alleged campus-rape crisis, and McElroy was expected to depart from …